Rib-knitting machine.



HEBTS-SHBET 1 Patented June 15,1909.

` R. W. SCOTT.

RIB KNITTING MACHINE. Y

R. W. SCOTT. RIB KNITTING MAGHINE. .APPLICATION FILED SEPT. 21,1908.

Patented June 15, 1909.

l l 2 SHEETS-SHEET 2.

manner illustrated-in said Fig'. 2.

ASSIGNOR, BY MESN'E ASSIGNMENTS, NEW YORK, A CORPORATION OF NEW UTIGA,

RIB -KNITTING EIACHINE specification of Letters Patent.

Patented June `15, 1909.

Application filed September 2l, 1908. Serial No. 453,963.

To all 707mm. it may concern:

Be it known that l', ROBERT W. SCOTT, a citizen of the United States,residingr in Leeds Point, Atlantic county, New Jersey, have inventedcertain improvements in Rib-Knitting Machines, ol' which the lillo\ving' is a specilication.

lhe object ol my invention to provide a knitting machine which issusceptible of producing ribbed fabric having a closer disposition ollthe u'ales and a heavier or a firmer texture than a ribbed knittedfabric produced in the usual way. .ln the accompanying dinnings-Figure 1is a vertical sectional View el su'l'iicicnt of a rib knitting machineto illustrate my invention; Fig'. 2 is a top or plan vieu' ot part ofthe needle-carrying dial ol said. machine; Fig'. 3 is a vieuillustrating two groups ol cams einployed for operating the dial needlesof the machine; Fig. 4 is a view illustrating two groups of cams foroperating' thev cvlindcr needles ot' the machine, and Fig. 5 isla-nenlarged section of a piece of ribbed fabric which can be produced uponthe machine.

The invention susceptible ol' embodiment either in a machine of smalldiameter, having but two lgroupel of canil in the cylin# der cani ringand dial cam ring, or in a inachine ot' larger diameter having a greaternumber of groups of camsl in both cam rings, a mac-lune of the lattertype having been sclccted for purposes ol illustration.

For the purpose ol better illustratingI the cooperation ol the needlesof thi` dial and cylinder, the earns ol' the dial earn rino' shown inFig. 3, are displayed on a straight line instead ot' beingr containedwithin a sector ol a circle as in the actual machine and the nains foractuating the cylinder needles are displayed in Fig. fatas in a `llatplane, whereas in the actual -inachine they are distributed arounill theinner lace of a circular cam ring. ln the actual machine, therefore, tholongitudinal dimensions ot' the cams ol' the dial cam ringr will dili'ersomewhat l'roni those shown in Fig. il on account el' the radialdispositioi'.. ol the needles in the dial but the said cams will, se.l'ar regards the projection. and retraction ol the needles, act in theln lfigr. l ol the drawing', l reorescnts the needle cylinder which isvertically grooved l'or the reception and guidance ol its needles, andis suitably secured to the fixed base or bed plate of the machine.Surrounding' the needle cylinder' is the cylindrical cam ring 3 upon'whose inner face are mounted the cams for imparting reciprocatingVmovement t.to the cylinder' needles, said cam ring being' se'y cured toa rotatable ring' 2 to which power may be applied in any ol' the usualways.

The needle dial l is mounted on a cent-ral stem or spindle 5 and is heldin stationary relation with the needle cylinder l either by means ofengaging' lugs on said ,cylinder and dial, such for instance., as shown.aty 6` and 7 in Fig. l', or in any other convenient Way, and above thedial is located the dial cam ring' 9, upon whose under lace are mountedlrthe cams whereby reciprocating movement is imparted to the needleswhich are guided in the radially grooved upper face of the dial, saiddial cam ringbeing' caused to rotatowith the cylinder cam ring inanyordinary Way.

While .l have selected for the purpose of illustrating' my invention, amachine of that type in which the needle cylinder and'dial arestationary, and cooperate with a rotating' cylinder cam ring' and arotating dial cam ring, it should be understood that my invention isequally applicable to that type of 1nachine in which these conditionsare reversed and in which the cylinder cam ring,r and dial earn ring arethe stationary elements,and the needle and dial rotate, or the inventionis applicable to machines havingr straight needle bsds'andreciprocating' cam carriers.

I'Beth the needle cylinder and dial are equipped with two sets olIneedles, the nee-` dles ol' one set being' disposed .iw-respect to thoseo'll the other set in accordanciA with the e iaracter olthe ribbedfabric which is to be produced.

rllhe machine shown in the drawing is;

adapted for the produotiim ol a fabric having what is known as aoue-and-one rib, the stitches being;4 drawn alternately on a cylinderneedle and a dial needle, and a needle .tot one set in the cylinderalternates with a needle it ol the saine not in the dial through theextent of the said cylinder and dial, the needles .r-x ol one setalternating with needles 1/-v-g/ ol the other set.

ll a two-aud-tn'o rib is desired, the needles will alternato in pairs.instead ol singly, and

"irs o' rib will require correspolnling he disposition ol the needles inthe tuo sers tlnoiurliout the cylinder and dial.

'llie needles :t/ ol the dial are in line with the needles y of thecylinder, and tlieneedles y of the dial are in line with the needles a;of x the cylinder. in connection with. one or more yarn feeds w, Fig.l., to produce a ribbed fabric of the usual character and the needlesy--y cooperate in The needles zi.-r/ cooperate l.

` total number of .needles is knitting at each connection with one ormore yarn feeds 12, 5

heavy weight can be produced with the use of light yarns, because ollthe nuinberof nee- Fig. l, to produce another ribbed`fabric of ordinarycharacter whose needle wales are disposed between those of the fabricfirst produce-d, thus, as shown in Fig. 5, the needle vitales areproduced from one yarn upon the needles is-M and tlie needle wales y2are produced from another yarn upon the needles In order to provide forthe independent operation of the needles i1-.rf and fy-y, said needlesare of ditl'eient lengths, the needles 'cr having their butts in adifferent plane from those of the needles y, and the needles a having agage of but twelve to the inch iii each needle carrier, owing to thefact that in my improved machine but one-half of the dle wales andcourses of stitches vper inch. which my invention renders possible,whereas weight in an ordinary ribbed lahricnieans heavy yarn, and this,in tui-n, necessitates a coarse gage.

By the use of relatively heavy yarn in the production of each member ofmy composite web, l can so closely crowd the wales that the having theirbutts in a different plaire from g those of the needles y', as shown inFigs. I

and 4, and the needle-actu ating cams for the two sets of needlesarellkewise disposed in different planes as also shown'in Figs. 3 and 4,the arrows in said figures representing the direction of movement of thecams in respect to the needles.

Any desired system of cams may be used for projecting and retracting theneedles of each set, but I find it advisable to use, in cooperation withthe reti-acting cams e-Ct which. impart draft to the needles snr', othercams b-b for so acting upon the needles y-y at the saine point that thestitches fabric will not possess the elasticity of an ordinary ribbedfabric but will, in this respect,

lpartalie more ol" the characteristics of a woven fabric.

Although l prefer in carrying out inyinven- .tion to locate the dialneedles in line with the cylinder needles in all cases, some of theiid-- vantagcs of my invention may he attained even although the dialneedles are not thus disposed.

ln grooving the dial for the reception and guidance of its needles onlythe outer portion s el' the dial need be grooved for the reception uponsaid needles 'y-fy will be held under l tendency oll the grooves to meetor run into borne iii mind that it is inuiracticable in an ordinary ribknitting machine to produce a web having more than about ourteen needlesto the inch on cach lace, foi' ni such ordinary rib knitting machine thedial needles l l of the dial (see Fig. 2).

grooving of the dial the inner grooves are alternate with the cylinderneedles sind consequently the whole twenty-eight needles must be crowdedinto one inch of space. a' machine constructed in iu'cordance with ln lof all of saidneedlcs, the extent of this portion of the dial providingample room for the formation of the full number of grooves. rlhe innerportion of the dial, however, need only be grooved for the reception ofthe longer dial needles, consequently there is no one another in thismore contracted portion 'l`o facilitate the preferably formed in aseparable ring 4.

As, in the composite fabric made upon my improved machine7 both of thecomponent webs are produced under the sanie conditions and are thereforeof uniform character, the composite web itself is uniform throughout.

l claim:V

l 'l`he combination in. a knitting machine for producing a ribbedfabric, of two needle carriers each having two sets of needles, needleoperating mechanism and a yarn supply ,oi' pcrating with the needles ofone set in cach carrier to produce one ribbed fabric, and

l needle operating mechanism and a yarn suplmy invention however, thedial needles are i Viii line with the cylinder needles, hence the plycooperating with the needles of the other set in each carrier to produceanother ribbed fabric inter-locked with the rst.

operation can be carried on with the saine 1 facility asin an ordinaryrib loiittinginachine 2. The combination in a knitting machine forproducing a ribbed fabric, of twoneedle carriers cach having two ofneedles, the needles of one set in each carrier being in line witl'i theneedles of the other set in the other carrier, needle operatingmechanism and a yarn supply cooperating with the needles of lil set ineach carrier to produce one ribbed fabric, end needle operatingmechanism and e yarn supply rofiperittiuig with the needles el' theether set in each carrier to produce enother ribbed fabric interlocliedwith the irst. The cinnbiimtion in e knittingv machine )fleeing e,ribbed fabric, of two needle 'Viel-s erich having` two sets of needles,neee operetin ineciienisin and c yarn supply u in with thenfedles of oneset in each carrier to i :oducernie ri bbed. fabric, needle opmechanism. and c frei-n supply coopeintmr erich carrier to produceanother ribbed fabric ii'iterloclied with the first, :1nd ineens foriniperting tension tothe stitches of each of said ribh 'l i'ubrics :itstiva-,hes of the other dra Wn.

sl. yIhre combination. in :i knitting machine for producing t ribbedfabric, of e cylinder end diei, each having-two of needles, nee! dlcope. iting ineclnmism and c yarn supply cooperating with one set ofneedles ol' the lei and dici to prodice one ribbed teorie and vner-,dbgoper ne mechanism and ppb operetmq with the other set oi'ncedles of th,id di* 'to produce smother ribbed tied with the iii-std v Thecombination in n l' for producing e ribbed fabric ere being' w I i owith the other set of needles in the points Where the` and diei, eachhaving two sets of needles,.the needles of the di'el being in line withthose of the' cylinder, needle operating mechanism end :t yern supplycoperating With the needles of one set in the cylinder and dial toproduce one ribbed fabric, and needle operating mechenisn'i sind a yarnsupply co el'eting with the needles of the other set in t e cylinder nuddial to produce another ribbed fabric interlocked with the iirst.

The combination in a knitting machine for producing e ribbed fabric 0ftwo needle carriers,v each having two sets of needles, the needles ofone set being of e different length from those of th'e other set, tWosets of needle operating mechanism located in different planes, und twoyarn supplies the needle op ereting mechanism in one piene and one yarnsup ly cooperating with one set of needles in eecn carrier to produceone ribbed fabric, and the needle plane and the other yarn supplycooperating with the other set ol' needles in each carrier to produceanother ribbed fabric interlocked with the first.

In testimony whereof', l have name to this specification, in the twosubscribing Witnesses,

ROBERT W. sco'rT signed my presence of operating mechanism in the-other

